A smaller version of a study is carried out before the actual investigation is done. Researchers use information gathered in pilot studies to refine or modify the research methodology for a study and to develop large-scale studies.

an early, small-to moderate-sized study, also known as a Phase 2 study. A pilot study follows the Phase 1 study, or "safety study," and is designed to begin determining the effectiveness of the experimental treatment

in the development of an information system, the institution of the new system in only one part of an organization; when that portion of the organization is satisfied with the system, the rest of the organization then starts using it